52671 + Interview Questions in Chemistry in Class 11

1.	STATEMENT -I :on reduction withNa BH_(4) in ethannol gives cyclopentanolSTATEMENT -2 :Conjugate addition first occurs followed by second direct addition .
Answer» STATEMENT-1is TRUE, Statement -2 is True , STAMENT -2 is a correct explanation for Statement -I. STATEMENT-1is True, Statement -2 is True , Stament -2 is a correct explanation for Statement -I. Statement -1 isTrue, Statement -2 is False. Statement - 1 and Statement -2 both are Fals Answer :A

Discussion

2.	Statement I: Primary alkyl halides on oxidation with DMSO gives aldehydes. Statement II: DMSO is used as polar aprotic solvent.
Answer» Both statement I and statement II are true INDIVIDUALLY and statement II EXPLAINS statement I. Both statement I and statement II are true individually but statement II does not EXPLAIN statement I. Only statement I is true, but statement II is false. Both statement I and II are false. Solution :Both statement I and statement II are true individually but statement II does not explain statement I.

Discussion

3.	Statement I : Photochemical smog is also known as oxidizing smog. Statement II : Photochemical smog is chiefly composed of O_(3) , PAN, etc.
Answer» Both STATEMENT I and statement II are TRUE and statement II EXPLAINS statement I Both statement I and statement II are true but statement II does not explain statement I Statement I is true but statement II is false Both statement I and II are false. Answer :A

Discussion

4.	StatementI : Ozone depletion potential is maximum is CFC's Statement II : CFC looses active chloride
Answer» Both STATEMENT I and statement II are true and statement II explains statement I Both statement I and statement II are true but statement II does not EXPLAIN statement I Statement I is true but statement II is false Both statement I and II are false. Answer :b

Discussion

5.	Statement I: N_(2), CO " and " CN^(-)are having same bond order . Statement II : Isoelectronic species always have samebond order .
Answer» Both statement I and II are TRUE and statement IIexplains statement I. Both statement I and II are true butstatement I does not EXPLAIN statement II . Statement I is true , but statement II is false Both - statement I and II are false Answer :a

Discussion

6.	Statement I : methaneethane propene and butaneare alkane groupcompoundsStatement IIthey are obeying C_(n)H_(2n+2) formula and eachdiffers from its proceeding memberby a CH_(2) group
Answer» STATEMENT -I and IIare CORRECT and statement II is correct explanation of statement -I statement I and II are correct but statement II is not correct explanation of statement I statement I is correct but statement II is WRONG statement I is wrongbut statementII is correct ANSWER :a

Discussion

7.	Statement -I n - butane and iso butane are isomers Statement -II : because they are havingsame molecular formula but diffes only in the structural formula
Answer» statement -I and IIare CORRECT and statement -II is correctexplanationof statement -I statement-I and II are correct but statement II is not correct explanation of statement -I statement-I ISCORRECT but statement-II is wrong statement -I is worng but statement -II is correct Answer :a

Discussion

8.	STATEMENT -I :Low molecualr weight carbonylcompounds aremore soloble in water then the corresponding alkanesSTATEMENT -2 : H- bonding between carbonyl oxygen and water makes carbonyl compounds more water soluble then hydrocarbon .
Answer» STATEMENT-1is True, Statement -2 is True , STAMENT -2 is a correct EXPLANATION for Statement -I. STATEMENT-1is True, Statement -2 is True , Stament -2 is a correct explanation for Statement -I. Statement -1 ISTRUE, Statement -2 is False. Statement - 1 and Statement -2 both are Fals Answer :A

Discussion

9.	Statement-I: Lithium hydride is the stablest of all the alkali metal hydrides Statement-II: The lattice energies of alkali metal halides decrease as the size of the halide ion increases
Answer» Both the STATEMENTS are TRUE Both the statements are FALSE I is false and II is true I is true and II is false ANSWER :A

Discussion

10.	Statement - I :- La^(3+), Lu^(3+) ions are colourless Statement - II :- They do not contain unpaired electrons
Answer» STATEMENT I is true, Statement II is true, Statement II is a CORRECT EXPLANATION of Statement I. Statement I is true, Statement II is true, Statement II is not the correct explanation of statement I Statement I is true, Statement II is false. Statement I is false, Statement II is true. Answer :A

Discussion

11.	Statement-I: Li_(2)CO_(3) decomposes on heating to give CO_(2) gas Statement-II: Carbonated of alkali metals give wakly alkaline solutions due to the hydrolysis of carbonate ion
Answer» Both the STATEMENTS are TRUE Both the statements are FALSE I is false and II is true I is true and II is false ANSWER :A

Discussion

12.	Statement - I: Ionization enthalpy of N is greater than that of O. Statement - II: N has exactly half filled electronic configuration which is more stable than electronic configuration of O.
Answer» Statement - I is wrong but statement - II is CORRECT Statement - I is correct but statement - II is wrong Statement - I and II are correct and statement - II is the correct explanation of statement - I. Statement - I and II are correct but statement - II is not the correct explanation of statement - I. Answer :C

Discussion

13.	Statement I : In sulphur hexafluoride, the central atom has more than eight valence electrons. Statement II: The central atom can accommodate additional electron pairs by using outer vacant d orbitals.
Answer» 1) STATEMENTS I and II are correct and STATEMENT Il is the correct EXPLANATION of statement I. 2) Statements I and II are correct but statement II is not the correct explanation of statement I. 3) Statement I is correct but statement II is wrong 4) Statement I is wrong but statement II is correct. Solution :Statements I and II are correct and statement Il is the correct explanation of statement I.

Discussion

14.	Statement I . In Haber's process , NH_(3) is liquefied and removed . Statement II . In manufacture of NH_(3) , liquefied and removal of NH_(3) , keeps the reaction moving in forward direction
Answer» Statement I and II are CORRECT and II is the correct explanation of I . Statement I and II are correct but II is not the correct explanation of I. Statement I is wrong but statement II is correct . Statement I is correct but statement II is wrong . Solution :Removal of `NH_(3)` will DECREASE its concentration which favours the production of `NH_(3)` according to the Le-Chatelier.s PRINCIPLE.

Discussion

15.	Statement I : In dissociation of PCl_(5) to PCl_(3) and Cl_(2) , K_(P) gt K_(C) Statement II : In dissociation of PCl_5 , Deltan_(g) = -ve and so K_(P) gt K_(C)
Answer» Statement I & II are correct and statement II is the correct EXPLANATION of statement I. Statement I & II are correct but statement II is not the correct explanation of statement I. Statement I is correct but statement II is wrong . Statement I is wrong but statement II is correct . SOLUTION :`Delta n_(g) = 2 - 1 = 1 = +`ve

Discussion

16.	Statement - I : Homolytic cleavage is symmetrical one. Statement-II: A single covalent bond breaks and each of the bonded atoms retains one electron.
Answer» Statement-I and II are CORRECT and statement -II is correct EXPLANATION of statement -I. Statement-I and II are correct but Statement-II not correct explanation of statement-I. Statement-I is WRONG but statement -II is correct Statement -I is wrong but statement -II is correct Answer :A

Discussion

17.	Statement - I : Hetrolytic cleavage is unsymmetrical one. Statement-II: Acovalent bond breaks and one of the bonded atom retains the bond pair of electrons.
Answer» Statement-I and II are CORRECT and statement -II is correct EXPLANATION of statement -I. Statement-I and II are correct but Statement-II not correct explanation of statement-I. Statement-I is WRONG but statement -II is correct Statement -I is wrong but statement -II is correct Answer :A

Discussion

18.	Statement-I :HCHO and HCOOH can be distingushed by Tollen's testStatement-II : Silver mirror is formed when ammonical AgNO_(3) is reduced.
Answer» Boththestatements are true and statement- II is the correct explanation of statement -I. Both STATEMENTS are true but statement -II is not the correct explanation of statement -I. Statement-I is true but statement -II is falsae Statement -I is false but statement- II is true Solution :HCHO andHCOOH RESPOND POSITIVELY to the Tollen 's test.

Discussion

19.	Statement I: H_(2) when allowed to expand at room temperature it causes heating effect. Statement II : H_(2) has inversion temperature much below room temperature.
Answer» Both STATEMENT I and statement II are true and statement II explains statement I. Both statement I and statement II are true but statement II does not explain statement I. Statement I is true but statement II is FALSE. Both the statements are false. Answer :A

Discussion

20.	Statement I : Greater is the critical temperature, more difficult is to liquefy the gas. Statement II: Stronger the intermolecular forces, lower would be the critical temperature of that gas.
Answer» Both STATEMENT I and statement II are TRUE and statement II explains statement I. Both statement I and statement II are true but statement II does not EXPLAIN statement I. Statement I is true but statement II is FALSE. Both the STATEMENTS are false. Answer :D

Discussion

21.	Statement-I : Fluoro acetic acid is stronger acid than acetic acid Statement - II: Fluorine has high electronegativity and it is facilitate to dissociate the O-H bond easily.
Answer» STATEMENT-I and II are correct and statement -II is correct EXPLANATION of statement -I. Statement-I and II are correct but Statement-II not correct explanation of statement-I. Statement-I is wrong but statement -II is correct Statement -I is wrong but statement -II is correct Answer :A

Discussion

22.	Statement I : Equivalent mass of Mg is determined by Oxide Method. Statement II : Molecular mass is claculated using vapour density.
Answer» Both the statements are individually true Both the statements are individually true and STATEMENT II is the correct explanation of statements I. Statement I is true but statement II is FALSE. Statement I is false but statement II is true. Answer :A::B::C::D

Discussion

23.	Statement I: CuCl Is more covalent than NaCl. Statement II: CuCl Is more covalent than NaCl, Cu^(+)is Small and have 3s^(2)" "3p^(6)" "3d^(10) configuration and show greater polarisation.
Answer» 1) Statement I & ll are correct and II is the correct EXPLANATION of I. 2) Statement I & \|\| are correct but II is not the correct explanation ot l. 3) Statement I is correct but II is WRONG. 4) Statement I is wrong and II is correct. Solution :Statement I & ll are correct and II is the correct explanation of I.

Discussion

24.	Statement I: CuCl is more covalent than NaCl. Statement II: As compared to Na^(+), Cu^(+) is small and have 3s^2 ,3p^6 3d^(10) configuration and show greater polarisation.
Answer» STATEMENT I & II are correct and II is the correct explanation of I. Statement I & II are correct but II is not the correct explanation of I. Statement I is correct but II is WRONG. Statement I is wrong and II is correct. Solution :Statement I & II are correct and II is the correct explanation of I.

Discussion

25.	Statement I: Crude common salt is hydrosco pic because of impurities CaSO_(4) and MgSO_(4) Statement II : The increase in solubility of hydroxides down the group 2 elements is due to increase in lattice energy
Answer» Both the STATEMENTS are true Both the statements are false I is false and II is true I is true and II is false ANSWER :B

Discussion

26.	Statement-I: Cesium is considered as the most electropositive element Statement-II: Due to its lowest ionization energy, cesium is considered as the most electropositive element
Answer» Statements-I and II are CORRECT and statement-II is the correct EXPLANATION of statement-I. Statements-I and II are correct but statement-II is not the correct explanation of statement-I. Statement-I is correct but statement-II is WRONG. Statement-I is wrong but statement-II is correct. ANSWER :A

Discussion

27.	Statement I : Bond angle of BF_(3) " and " NF_(3) are different Statement II : Both the molecules are having different shapes .
Answer» Both statement I and II are TRUE and statement II EXPLAINS statement I . Both statement I and II are true but statement I does not explain statement II . Statement I is true, but statement II is FALSE Both - statement I and II are false Answer :B

Discussion

28.	Statement-I: "C" product of above conversion is sodium salt of Pentan-1,5-dioic acid Statement-II: R.D.S of A to C conversion is attack of enolate ion on halogen molecule.
Answer» If both statement-1 & statement-2 are TRUE & the statement-II is a CORRECT explanation of the statement-I If both statement-I & statement-II are true but statement-II si not a correct explanation of the statement-I If statement-I is true but the statement-II is false. If statement-I is false but the statement-II is true. Answer :C

Discussion

29.	Statement-I: BeCl_(2) is soluble in organic solvent. Statement-II: Since BeCl_(2) is a covalent compound, it is soluble in organic solvent.
Answer» Statements-I and II are CORRECT and statement-II is the correct EXPLANATION of statement-I. Statements-I and II are correct but statement-II is not the correct explanation of statement-l. Statement-I is WRONG but statement-II is correct Statement-I is correct but statement-II is wrong Answer :A

Discussion

30.	Statement-I Be and Mg elements do not give a coloured flame in flame test. Statement-II Be is not a true element of Group 11 and Mg shows metallic character. Select the correct options :
Answer» Statement-I and II both are CORRECT and Statement-II GIVES the correct understanding of Statement-I. Statement-I is false while Statement-II is true. Both Statements-I and II are false. Statement-I is true and Statement-II is true, but it does not GIVE a correct understanding of Statement-I. Answer :D

Discussion

31.	Statement -I: Azimuthal quantumnumber of the orbital repesented by the given curve may be any whole number. Statement -II : For s-orbital radial probability distribution curve not start from origen.
Answer» If both STATEMENT -I &Statement -II are True & the Statement -II is a CORRECT explanationof the Statement I. If both Statement -I &Statement -II are True but the Statement -II is not a correct explanationof the Statement- I. If Statement -IIS True but the Statement -II is False. If Statement -Iis True but the Statement -II is True . Solution :N//A

Discussion

32.	Statement I: At very high pressures, compressibility factor is greater than 1. Statement II : At very high pressure, 'b' can be neglected in van der Waal's gas equation.
Answer» Both statement I and statement II are true and statement II explains statement I. Both statement I and statement II are true but statement II does not EXPLAIN statement I. Statement I is true but statement II is FALSE. Both the STATEMENTS are false. Answer :C

Discussion

33.	Statement-I: All living things are open systems. Statement-II: Because they continuously exchange matter and energy with thr surroundings.
Answer» STATEMENT-I and II are correct and statement-II is correct EXPLANATION of statement-I. Statement_iI and II are correct but statement II is not the correct explanantion of statement_I statement I is correct and statement II is WRONG statement_I is wrong but Statement_II is correct ANSWER :A

Discussion

34.	Statement- I: All the organic molecules contain covalent bonds. Statement-II: Organic molecules are formed by the mutual sharing of electrons between atoms.
Answer» Statement-I and II are CORRECT and statement -II is correct EXPLANATION of statement -I. Statement-I and II are correct but Statement-II not correct explanation of statement-I. Statement-I is WRONG but statement -II is correct Statement -I is wrong but statement -II is correct Answer :A

Discussion

35.	Statement-I: All living things are open systems. Statement-II: Because they continuously exchange matter and energy with the surroundings
Answer» Statement-I and II are CORRECT and Statement-II is the correct EXPLANATION of Statement-I Statement-I and II are correct but Statement-II is not the correct explanation of Statement-I Statement-Iis correct and Statement-II is WRONG Statement-I is wrong but Statement-II is correct ANSWER :A

Discussion

36.	Statement -I alkenes shows both structuraland geometrical isomerism Statement -II because of the presence of doublebond
Answer» Statement-I and II are CORRECT but statement-II is not correct EXPLANATION of statement -I statement -I and II are correct but statement-II is not correct explanation of statement -I statement -IIS correct butstatement-II is wrong statement -II is wrong but statement-I is correct ANSWER :a

Discussion

37.	Statement-I alkenes are more reactive than alkanes Statement -II because of the presence of a double bond
Answer» STATEMENT-I and II are correct and statement-II is correct EXPLANATION of statement -I statement-I and IIare correct but statement-II is not correct explanation of statement I statement-I is correct but statement -II is wrong statement -I is worng but statement -II is correct ANSWER :a

Discussion

38.	Statement-I: Alkali metals are very soft metals Statement-II: Since the atoms of alkali metals have bigger kernels and smaller number of valence electrons, the metallic bonds in them are very weak and hence they are soft
Answer» Statements-I and II are CORRECT but statement-II is not the correct EXPLANATION of statement-I Statements-I and II are correct and statement-II is the correct explanation of statement-I Statement-I is correct but statement-II is WRONG Statement-I is wrong but statement-II is correct. Answer :B

Discussion

39.	Statement-I : Addition of bromine to trans-2-buten yields meso-2,3-bromo butane. Statement II: Bromine addition to an alkene is an electrophilic addition .
Answer» Statement-I is true , statement-II is true and statement-II is correct EXPLANATION of statement-I Statement-I is true , statement-II is true and statement-II is not correct explanation of statement-I Statement-I is true , statement-II is FALSE Statement-I is false , statement-II is TURE . SOLUTION :Cyclic halonium

Discussion

40.	Statement I . Addition of an inert gas at constant volume has no effect on equilibrium . Statement II . When an inert gas is added , the total number of moles of gases present in the container increases and total pressure also increases , the partial pressure of the products and reactants are unchanged .
Answer» STATEMENT I and II are correct but statement II is not the correct explanation of I. Statement I and II are correct and Statement II is the correct explanation of I. Statement I is correct but statement II is not correct Statement I is WRONG but statement II is correct . Solution :Statement I and II are correct and statement II is the correct explanation of I.

Discussion

41.	STATEMENT -I :Acetylene on treatment with alkalineKMnO_(4)" product acetaldehyde"STATEMENT -2 : " Alkaline"KMnO_(4) is aoxidising agent.
Answer» STATEMENT-1is True, Statement -2 is True , STAMENT -2 is a correct EXPLANATION for Statement -I. STATEMENT-1is True, Statement -2 is True , Stament -2 is a correct explanation for Statement -I. Statement -1 isTrue, Statement -2 is False. Statement - 1 and Statement -2 both are Fals Answer :D

Discussion

42.	Statement-I: Acetanilide acts as a negative catalyst for decomposition of H_(2)O_(2). ltbr. Statement-II: In the presence of acetanilide, the stability of H_(2)O_(2) increases.
Answer» If both Statement-1 `&` Statement-II are True `&` the Statement-II is not a CORRECT explanation of the Statement I. If both Statement-I `&` Statement-II are True but Statement-II is not a correct explanantion of the Statement-I. If Statement-I is True but the Statement-II is FALSE. If Statement-I is False but the Statement-II is True. Solution :N//A

Discussion

43.	Statement -:I:Acetaldehyde on reaction withH_(2)SO_(4)atroom temp forms a solidfuel(CH_(3)CHO)_(4) actsas a solid fuel
Answer» Boththestatements are TRUE and statement- II is the correct explanation of statement -I. Both STATEMENTS are true but statement -II is not the correct explanation of statement -I. Statement-I is true but statement -II is falsae Statement -I is FALSE but statement- II is true Answer :4

Discussion

44.	Statement I : A pure solid in an equilibrium reaction has the same concentration at a given temperature . Statement II : The solid does not expand to fill its container and it has same number of moles of its volume .
Answer» STATEMENT I and II are CORRECT and statement II is the correct explanation of STATEMENTOF I. Statement I and II are correct but II is not the correct explanation of I. Statement I and II are not correct Statement I is WRONG but II is correct Solution :Statement I and II are correct and statement II is the correct explanation of statement of I.

Discussion

45.	Statement I: A solution of potassium chloride in water deviates from ideal behaviour. Statement II: The solute dissociates to give K ^(+) and Cl ^(-) ion which form strong ion dipole interaction with water molecules.
Answer» 1) STATEMENT I & II are CORRECT and II is the correct explanation of I 2) Statement I & II are correct but II is not correct explanation of I 3) Statement I is wrong but statement II is correct 4) Statement I & II are correct and II is the correct explanation of I ANSWER :A

Discussion

46.	Statement - I : A pure solid in an equilibrium reaction has the same concentration at a given temperature .Statement II : The solid does not expand to fill its container and it has same number of moles of its volume.
Answer» STATEMENT I and II are CORRECT and statement II is the correct EXPLANATION of statement of I . Statement I and II are correct but II is not the correct explanation of I. Statement I and II are not correct . Statement I is WRONG but II is correct. Solution :Statement I and II are correct and statement II is the correct explanation of statement of I.

Discussion

47.	Statement : Chloro acetic acid is more acidic than acetic acid Reason : Chloro group has + 1 effect
Answer» Both ASSERTION , REASON are CORRECT Assertion is FALSE , Reason is correct Assertion is correct, Reason is false Both assertion and reason are false SOLUTION :N/A

Discussion

48.	Statement : Concentration of Zn_((aq))^(2+) increases cell potential increases (E_("cell")). Reason : Concentration of Zn_((aq))^(2+) increases with oxidation potential increases (E_(OX)).
Answer» Statement and REASON both are CORRECT and reason GIVES proper explanation of statement. Statement and reason both are RIGHT bụt reason is not explanation of statement. Statement is correct but reason is WRONG. Statement is wrong but reason is correct. Answer :D

Discussion

49.	Statement : Chloro acetic acid is more acidic than acetic acid Reason : Chloro group has +1 effect
Answer» Both ASSERTION, REASON are CORRECT Assertion is FALSE, Reason is correct Assertion is correct, Reason is false Both Assertion and Reason are false Solution :Assertion is correct, Reason is false

Discussion

50.	STATEMENT-2: Structural isomer having same type of carbon chain but different position of functional group are called position isomers.
Answer» Statement-1 is True, Statement-2 is True, Statement-2 is a CORRECT EXPLANATION for Statement-1. Statement-1 is True, Statement-2 is True, Statement-2 is NOT a correct explanation for Statement-4 Statement-1 is True, Statement-2 is FALSE. Statement-1 is False, Statement-2 is True. Solution : functional isomers.

Discussion

Explore topic-wise InterviewSolutions in Current Affairs.

STATEMENT -I :on reduction withNa BH_(4) in ethannol gives cyclopentanolSTATEMENT -2 :Conjugate addition first occurs followed by second direct addition .

Statement I: Primary alkyl halides on oxidation with DMSO gives aldehydes. Statement II: DMSO is used as polar aprotic solvent.

Statement I : Photochemical smog is also known as oxidizing smog. Statement II : Photochemical smog is chiefly composed of O_(3) , PAN, etc.

StatementI : Ozone depletion potential is maximum is CFC's Statement II : CFC looses active chloride

Statement I: N_(2), CO " and " CN^(-)are having same bond order . Statement II : Isoelectronic species always have samebond order .

Statement I : methaneethane propene and butaneare alkane groupcompoundsStatement IIthey are obeying C_(n)H_(2n+2) formula and eachdiffers from its proceeding memberby a CH_(2) group

Statement -I n - butane and iso butane are isomers Statement -II : because they are havingsame molecular formula but diffes only in the structural formula

STATEMENT -I :Low molecualr weight carbonylcompounds aremore soloble in water then the corresponding alkanesSTATEMENT -2 : H- bonding between carbonyl oxygen and water makes carbonyl compounds more water soluble then hydrocarbon .

Statement-I: Lithium hydride is the stablest of all the alkali metal hydrides Statement-II: The lattice energies of alkali metal halides decrease as the size of the halide ion increases

Statement - I :- La^(3+), Lu^(3+) ions are colourless Statement - II :- They do not contain unpaired electrons

Statement-I: Li_(2)CO_(3) decomposes on heating to give CO_(2) gas Statement-II: Carbonated of alkali metals give wakly alkaline solutions due to the hydrolysis of carbonate ion

Statement - I: Ionization enthalpy of N is greater than that of O. Statement - II: N has exactly half filled electronic configuration which is more stable than electronic configuration of O.

Statement I : In sulphur hexafluoride, the central atom has more than eight valence electrons. Statement II: The central atom can accommodate additional electron pairs by using outer vacant d orbitals.

Statement I . In Haber's process , NH_(3) is liquefied and removed . Statement II . In manufacture of NH_(3) , liquefied and removal of NH_(3) , keeps the reaction moving in forward direction

Statement I : In dissociation of PCl_(5) to PCl_(3) and Cl_(2) , K_(P) gt K_(C) Statement II : In dissociation of PCl_5 , Deltan_(g) = -ve and so K_(P) gt K_(C)

Statement - I : Homolytic cleavage is symmetrical one. Statement-II: A single covalent bond breaks and each of the bonded atoms retains one electron.

Statement - I : Hetrolytic cleavage is unsymmetrical one. Statement-II: Acovalent bond breaks and one of the bonded atom retains the bond pair of electrons.

Statement-I :HCHO and HCOOH can be distingushed by Tollen's testStatement-II : Silver mirror is formed when ammonical AgNO_(3) is reduced.

Statement I: H_(2) when allowed to expand at room temperature it causes heating effect. Statement II : H_(2) has inversion temperature much below room temperature.

Statement I : Greater is the critical temperature, more difficult is to liquefy the gas. Statement II: Stronger the intermolecular forces, lower would be the critical temperature of that gas.

Statement-I : Fluoro acetic acid is stronger acid than acetic acid Statement - II: Fluorine has high electronegativity and it is facilitate to dissociate the O-H bond easily.

Statement I : Equivalent mass of Mg is determined by Oxide Method. Statement II : Molecular mass is claculated using vapour density.

Statement I: CuCl Is more covalent than NaCl. Statement II: CuCl Is more covalent than NaCl, Cu^(+)is Small and have 3s^(2)" "3p^(6)" "3d^(10) configuration and show greater polarisation.

Statement I: CuCl is more covalent than NaCl. Statement II: As compared to Na^(+), Cu^(+) is small and have 3s^2 ,3p^6 3d^(10) configuration and show greater polarisation.

Statement I: Crude common salt is hydrosco pic because of impurities CaSO_(4) and MgSO_(4) Statement II : The increase in solubility of hydroxides down the group 2 elements is due to increase in lattice energy

Statement-I: Cesium is considered as the most electropositive element Statement-II: Due to its lowest ionization energy, cesium is considered as the most electropositive element

Statement I : Bond angle of BF_(3) " and " NF_(3) are different Statement II : Both the molecules are having different shapes .

Statement-I: "C" product of above conversion is sodium salt of Pentan-1,5-dioic acid Statement-II: R.D.S of A to C conversion is attack of enolate ion on halogen molecule.

Statement-I: BeCl_(2) is soluble in organic solvent. Statement-II: Since BeCl_(2) is a covalent compound, it is soluble in organic solvent.

Statement-I Be and Mg elements do not give a coloured flame in flame test. Statement-II Be is not a true element of Group 11 and Mg shows metallic character. Select the correct options :

Statement -I: Azimuthal quantumnumber of the orbital repesented by the given curve may be any whole number. Statement -II : For s-orbital radial probability distribution curve not start from origen.

Statement I: At very high pressures, compressibility factor is greater than 1. Statement II : At very high pressure, 'b' can be neglected in van der Waal's gas equation.

Statement-I: All living things are open systems. Statement-II: Because they continuously exchange matter and energy with thr surroundings.

Statement- I: All the organic molecules contain covalent bonds. Statement-II: Organic molecules are formed by the mutual sharing of electrons between atoms.

Statement-I: All living things are open systems. Statement-II: Because they continuously exchange matter and energy with the surroundings

Statement -I alkenes shows both structuraland geometrical isomerism Statement -II because of the presence of doublebond

Statement-I alkenes are more reactive than alkanes Statement -II because of the presence of a double bond

Statement-I: Alkali metals are very soft metals Statement-II: Since the atoms of alkali metals have bigger kernels and smaller number of valence electrons, the metallic bonds in them are very weak and hence they are soft

Statement-I : Addition of bromine to trans-2-buten yields meso-2,3-bromo butane. Statement II: Bromine addition to an alkene is an electrophilic addition .

STATEMENT -I :Acetylene on treatment with alkalineKMnO_(4)" product acetaldehyde"STATEMENT -2 : " Alkaline"KMnO_(4) is aoxidising agent.

Statement-I: Acetanilide acts as a negative catalyst for decomposition of H_(2)O_(2). ltbr. Statement-II: In the presence of acetanilide, the stability of H_(2)O_(2) increases.

Statement -:I:Acetaldehyde on reaction withH_(2)SO_(4)atroom temp forms a solidfuel(CH_(3)CHO)_(4) actsas a solid fuel

Statement I : A pure solid in an equilibrium reaction has the same concentration at a given temperature . Statement II : The solid does not expand to fill its container and it has same number of moles of its volume .

Statement I: A solution of potassium chloride in water deviates from ideal behaviour. Statement II: The solute dissociates to give K ^(+) and Cl ^(-) ion which form strong ion dipole interaction with water molecules.

Statement - I : A pure solid in an equilibrium reaction has the same concentration at a given temperature .Statement II : The solid does not expand to fill its container and it has same number of moles of its volume.

Statement : Chloro acetic acid is more acidic than acetic acid Reason : Chloro group has + 1 effect

Statement : Concentration of Zn_((aq))^(2+) increases cell potential increases (E_("cell")). Reason : Concentration of Zn_((aq))^(2+) increases with oxidation potential increases (E_(OX)).

Statement : Chloro acetic acid is more acidic than acetic acid Reason : Chloro group has +1 effect

STATEMENT-2: Structural isomer having same type of carbon chain but different position of functional group are called position isomers.